Markov V.S.and E.S.Songs of the Kirsanovsky district, the Tambov province.The cover letter of Kovalevsky is applied.

Markov V.S.and E.S.Songs of the Kirsanovsky district, the Tambov province.The cover letter of Kovalevsky is applied.- 1887. -Agreement No. 24 of 02/12/2016 Grade 40 of the manuscript of the works of members of the Russian Geographical Society and separate documents in the Tambov province, case 35..Electronic copy source: PB